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Netricide - the act of killing off a personal identity, or online character. May also refer to deactivating a social network account.

Killing something on the internet.
I am so sick of my Facebook account that I am on the verge of committing netricide.

My students created a Twitter account for my class session, but then we committed netricide so no one would ever see the posts!
by docroc March 19, 2014